Researchers at the Chinese University of Hong Kong have created a "soft robot" made out of mud with magnetic particles that can be manipulated with external magnets.
The magnetic particles are toxic but have theoretically been secured for entry into the human body after being coated with a layer of silicone compound, although further safety testing is required in the future.
The Hong Kong team hopes the slime will one day be used to retrieve accidentally swallowed items.
You can read more about the team's research here .
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